package com.gws.ievent.common.utils;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author song
 * @date 2022/10/22 8:10
 */
public class DefaultThreadFactory implements ThreadFactory {
    private static final AtomicInteger POOL_NUMBER = new AtomicInteger(1);
    private final ThreadGroup group;
    private final AtomicInteger threadNumber = new AtomicInteger(1);
    private final String namePrefix;

    public DefaultThreadFactory(String name) {
        SecurityManager s = System.getSecurityManager();
        group = (s != null) ? s.getThreadGroup() :
                Thread.currentThread().getThreadGroup();

        if (name == null || name.length() == 0) {
            name ="i-thread-" + POOL_NUMBER.incrementAndGet() + '-';;
        } else {
            name = StringUtil.trimEnd(name, "-") + '-';
        }

        namePrefix = name + POOL_NUMBER.getAndIncrement() + '-';
    }


    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(this.group, r, this.namePrefix + this.threadNumber.getAndIncrement(), 0);

        if (t.isDaemon()) {
            t.setDaemon(false);
        }

        if (t.getPriority() != Thread.NORM_PRIORITY) {
            t.setPriority(Thread.NORM_PRIORITY);
        }

        return t;
    }
}
